MITSUMI
2-Input 1-Output 3-Circuit Video Switch MM1231~1234
2-Input 1-Output 3-Circuit Video Switch
Monolithic IC MM1231~1234
Outline
This is serial 2-input, 1-output, 3-circuit video switch IC for video / audio signal switching with and without
clamp circuit.
Circuit configuration tables and block diagrams are as follows.
MM1234 is used as the representative model in this description.
MM1231~MM1234 Series Circuit Configuration Table
Model name
MM1231
MM1232
MM1233
MM1234
# of Inputs
2
2
2
2
# of Outputs
1
1
1
1
Clamp circuit
No
1 input
2 input
3 input
Power supply voltage
4.6~13.0V
4.6~13.0V
4.6~13.0V
4.6~13.0V
MM1231~MM1234 Input/Output Voltage Measurement Values (typ.)
Model name
Input / Output
voltage
Input voltage
Output voltage
Input voltage
MM1232
Output voltage
Input clamp
Output voltage
Input voltage
MM1233
Output voltage
Input clamp
Output voltage
MM1234
Input clamp
Output voltage
Power supply voltage
5V
2.80
2.01
2.80
2.10
1.40
0.70
2.80
2.10
1.40
0.70
1.40
0.70
9V
5.00
4.30
5.00
4.30
2.50
2.20
5.00
4.30
2.50
2.20
2.50
2.20
12V
6.70
6.00
6.70
6.00
3.30
2.90
6.70
6.00
3.30
2.90
3.30
2.90
Unit
V
V
V
V
V
V
V
V
V
V
V
V
MM1231
MITSUMI [ MITSUMI ELECTRONICS, CORP. ]
